KaOS is described as 'Desktop Linux distribution that features the latest version of the KDE desktop environment, the Calligra office suite, and other popular software applications that use the Qt toolkit. It was inspired by Arch Linux, but the developers build their own packages which are' and is a Linux Distro in the os & utilities category. There are more than 100 alternatives to KaOS for a variety of platforms, including Linux, Self-Hosted, BSD, Mac and Windows apps. The best KaOS alternative is Lubuntu, which is both free and Open Source. Other great apps like KaOS are CentOS, Raspberry Pi OS, Haiku and Chrome OS.